brehm



C. IVI. BREHM.

APPLICATION FILED FEILIII Ism.

1,304,151. Patented May 20, 1919.

3 SHEETS-SHEET 1.

l: II" /4 \\5 I C. M. BREHM.

" APPLICATION FILED FEB.8. 19W.

1539451.51 Patented May 2O,V 1919.

3 SHEETS-SHEET 2.

C. M. BREHM.

DIE.

. 9K9Y l ,304, 1 5 l. Patented May 20, 1919..

3 SHEETS-SHEETJ3..

CHARLES M. BREHM, 0F DAYTN, OHIO.

DIE.

Specification of Letters Patent.

Patented May 2o, 1919'.

Application led February 8, 1919. Serial N o. 275,731.

To all whom t may concern: j

Be it known that I, CHARLES M. BREHM, a citizen of the United States,residing at Dayton, in the county of Montgomery and Stato of Ohio, haveinvented certain new and useful Improvements in Dies, of which thefollowing is'a specification, reference being had therein to theaccompanying drawing.

This invention relates to dies, particularly to trimming dies and hasfor its object to provide a trimming die which will operate in oneormore lateral directions whereby the trimming operations will becompleted on one stroke of the press in which the die is used.

My improved die is especially adapted to trimming hollow articles,either round, reetangular, or irregular shaped, and will trim the edge-of such articles complete on one stroke of the' press.

As here' shown, the particular die embodying the invention is designedto trim the edge of a round, cup-shaped punching, the edge being trimmeduniformly. It will be obvious, however, from the detail description ofthe invention that articles of a wide variety in shapes, having uniformor irregular edges, may be treated in suitable' dies constructed on theprinciples of my invention.

The main object to be attained in the improved dies is cheapness inproduction. As far as I am aware, and speaking from years of experiencein modern methods in shop practises, no method or principle in dieconstruction has been heretofore developed whereby operations of thecharacter contemplated in my invention are possible. Under presentpractises such operations are usually performed on a mill or lathewhichis much slower and therefore increases cost of production.

The particular die here shown is a single unit die, but it will beunderstood that the invention is readily adaptable to multiple unitdies, and that the rate of production may therefore be greatly increasedover the normally rapid production of a single unit die.

Also, as here shown, the product is inserted into and removed from thedie by hand, but it is obvious that dies embodying the invention arereadily adaptable to automatic means for introducing and removing theproduct. Such means do not constitute any part of the present inventionand are therefore not shown.

While my improved die embodies an important principle and function notheretofore employed in die construction I have been able to .apply inthe application of the invention the well known rules governing dieconstruction, such as strength and stress of metals, provision forgrinding, clearance, etc., so that the construction is substantial andthe die in all respects is effective for the purposes of the invention.

Referring to the drawings:

Figure 1 is a vertical cross sectional View of the male and femalediemembers and showing the manner ofsecuring the die to an ordinarypress;

Fig.'2 isa perspective View of the male member of the die;

Fig. 3 is a perspective View of the die base and female member of thedie showing the latter in its normally raised position above the face ofthe die base the same as in Fig. 1. v

Fig. 4 illustrates the unfinished and finished product, respectively, tobe adapted to the particular die here shown and consisting of acup-shaped punching having an edge requiring finish to predetermineddimensions;

Fig. 5 is a perspective viewof the die base.

Fig. 6 is a cross sectional View of the die base taken onthe line 6-6 ofFig. 5, showing two of the same projections on the inner faces of thedie base;

Fig. 7 is a plan view of the movable die member showing the camprojections on the edges thereof whereby in coperation with the cams inthe die base lateral movement is imparted to the female die member;

Figs. 8 and 9 are perspective views of the female die members eachshowing two edge faces of the die member and the arrangement of the camprojections thereon;

Figs. 10, 11 and l2 are detail sectional views showing the camformationon each of the three edge faces of the die member, as shown in Figs. 8and 9.

As here shown the invention consists of a die supporting base 1 and thedie block 2. the latter being secured to the base block in any suitablemanner, as by screws 3, and having a triangular-shaped aperture Jeextending through the central port-ion thereof in which the die member 5is operatively supported having limited lateral'and vertical movementthereinc The member 5 is supported by posts 6, one at each cornerthereof, the upper ends of the posts being retained in yieldablerelation thereto by short pins or studs 7 secured in the block andcoperating With holes 8 in the end of the post.

The posts 6 extend tiirough apertures 9 in the base, l, their oppositeends resting in shallow seats in a plate 10 disposed in a horizontalplane below the base lg The plate l0 is supported on and is normallypressed upwardly by springs il which telescope guide rods l2 extendingthrough apertures i3 in the plate 10 and having their upper endsthreaded into the base l', the lower encs of the rods being 'threaded'and provided With nuts and supporting Washers, whereby the tension orthe springs may be adjusted.

Adjacent their upper edges each oit the -Walls of theaperture (l, ashere shown, is provided with an i vardly projecting rib or flange llisubstanIJ 1y triangular shaped in cross section, the i per and louerfaces of which function cams in cf'peration with cam surfaces l--l-l'?orined rcspectively in the edge ces of tie die memi e Y QOL D.

that the cani elements erranged in YL 1y i, 1, T it vviii oe observe@Lin the aperture #l are l Yl plane anc norizorespects equal or iclearance spaces l@ the ape ure, Ho* l5-l(i-l Zontal pla is in theconstruct-ion and ided at the cor 1.? .,n ver, me cam suiiaces d indiffer-ent neritransmitted their'Y tha, the mein ob o ,lized it be,first plane of movement, and iinall, as the cam surface 17 contactsWith the third cam le, the die member is moved laterally, in a plane' atan angle of 120O to 'the second plane of movement.

The upper face of the die block 5 has a central aperture 20, the bottomof which is formed by a plug 21 which is normally held in raisedposition by a spring 22 which, is supported on a threaded plug 19; thelower portion of the aperture being larger in dil ameter than the upperportion a shoulder 23 is formed With which a corresponding shoulder 24of the plug 21 contacts and defines, therefore, the upper limit ofmovement of the plug 2L The opposite or punch member of the die consistsof the usual base plate 25 and stem 25; the base plate having secured tothe under side thereof, by the usual screw and dovvel mounting,atriangular shaped block 27 which conforms in its surface dimensionssubstantially to the dimensions of the aperture 4.

For the immeoiate application of the invention the exposed face of thepunch block 27 is provided with a depression or clearance space 28 atthe center of which the punch, or rather as here used, the 'trimming.ien'iber 29 is secured to the block, and secured in the nember 29 andprojectinggupwardly therefrom is the sea-ting pilot the end surface ofthe trimmer 29 being sli l ""v if than 'Gush with the outer `face ffewill be u ierstood be briefly s minarized as he unfinished product instance consists of a L, may

the pre L lching hav ig an 1Jn in rig, requiimM The uninishedarticles.)` am'einure ,1v hand and v ,i removed by hand operation.

article forces :iov/vn required tlig their the press nf'inue{, Y isforced di War I G regular fini"l it will be un,

relative to the seating; i, ug 2i act, Vrespectively, to cause theseparte to yield suiper limits, and that excessive pressure between theparts and breakage thereof will no occur.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. In adie, the combination, a stationary member having an aperturetherein, a. member operable in said aperture, cam elements arrangedrespectively in said aperture and on said movable member; and a membermovable relative to said members and adapted to move the second membervertically, whereby the cam elements will act to move said second membersuccessively laterally in a plurality of planes.

2. In a die, the combination, a stationary member having an aperturetherein, a member operable in said aperture, cam elements arrangedrespectively in said aperture and on said movable member; and a membermovable relative to said members and adapted to move the secondimembervertically, whereby the camv elements will act to move said secondmember laterally.

3. In a die, the combination, a stationary member having an angularshaped aperture therein, a corresponding angular shaped member operablein said aperture, cam elements arranged respectively in said apertureand on said movable member; and a ,member movable relative to saidmembers and adapted to move the second member vertically, whereby thecam elements will act to move said second member successively laterallyin a plurality of planes.

4. In a. die, the combination, a stationary member having a triangularshaped aperture therein, a triangular shaped member operable in saidaperture,'cam elements arranged respectively in said aperture and onsaid movable member; and a member movable relative to said members and4adapted to move the second member vertically, whereby the cam elementswill act to move said second member successively laterally in aplurality or' planes. j

5. In a die, the combination, a stationary member having an aperturetherein, a member operable in said aperture and having means to seat anarticle therein, cam elements arranged respectively in said aperture andon said movable member, a member movable relative to said members,adapted to move the second member vertically, and having a projectionadapted to engage said article, whereby the cam elements will act tomove said second member successively laterally in a plurality of planes,thereby causing a portion of said article to be removed.

6. In a die, the combination, a stationary ture and on said movablemember, and a `member movable relative to said members,

adapted to move the second member vertically, and having'a projectionadapted to engage the hollow portion of said article, whereby the camelements will act to move said second member successively laterally in aplurality of planes, thereby causing the edge of said article to beremoved.

7 In a die, the combination, a stationary member having an aperturetherein, a member operable in said aperture and having meansito seat ahollow article therein, cam elements arranged respectively in saidaperture and onsaid movable member, a mem ber movable relative to saidmembers, adapted to move the second member vertically, and having aprojection adapted to engage the hollow portion `olf -said article and asecond projection adapted to seat the article in saidv aperture, wherebythe cam elements will act to move said second member successivelylaterally in a plurality of planes, thereby causing the edge of saidarticle to be removed.

8. In a die, the combination, a stationary member having an aperturetherein, a member operable in said aperture `and having means to seat ahollow article therein, cam elements arranged respectively in saidaperture and on said movable member, and a member movable relative tovsaid members,

adapted to move the second member vertically, and having a projectionadapted to engage the hollow portion of said article, whereby the camelements will act to move said second member successively in a.plurality of planes, thereby causing the edge portion of said article tobe removed to a predetermined extent.

9. In a die, the combination, a stationary member having an aperturetherein, a member operable in said aperture and having means to seat ahollow article therein, cam elements arranged respectively in saidaperture and on said movable member, and a member movable relative tosaid members, adapted to move the second member vertically and having apart adapted to enter the hollow portion of said article to apredetermined extent, whereby the cam elements will act to move saidsecond-member successively in a plurality of planes laterally, therebycausing the edge portion of said article to be removed to an extentdetermined by the extent of projection of said part in said article.

10. In a die, the combination, a stationary member having an aperturetherein, a member operable 1n said aperture and having means to seat ahollow article therein, cam elements arranged respectively in saidaperture and on said movable member, a member movable relative tosaidmembers, ada ted to move the second member vertica ly and having apart adapted to enter the hollovv portion of said article and aclearance space surrounding said part for the projecting edges of thearticle, whereby the cam elements will act to move said second membersuccessively laterally in a plurality of planes, thereby causing theedge of said article to be removed.

ll. ln a die, the combination, a. stationary member ha ving` an aperturetherein, a me ber operable in said aperture and having a Hat iace `withan aperture for seat-ing a hollow article therein, cam elements arrangedrespectively in said aperture and on said movable member, a membermovable relative to said members having a. llat face with a depressiontherein, a part ext-ending vertically in said depression and havingitsend substantially flush -with said face and adapted to project into thehollow portion of said article; the face of said lest member beingadapted to engage the face of the second member and move the samevertically, whereby the cam elements Willact to move said second membersuccessively laterally in a plurality of planes, thereby causing theedge of said article to be removed.

l2. ln a die, the combination, a base plate having` a stationary diemember secured thereto, said member having an aperture therein, anoperable member yieldably supported in said aperture 'from the baseplate, cam elements arranged respectively in said aperture 'and on saidmovable member; and a member movable relative to said members andadapted to move the second member vertically, whereby the cam elementswill act to move said second member successively laterally in aplurality of planes.

13. ln a die, the combination, a base plate having stationary die membersecured thereto, said member having an aperture therein, an operablemember supported in said aperture on posts seated on a plate resting; onsprings suspended on rods secured to the base plate, cam ele-mentsarranged respectively in said aperture and on said movable member, and amember movable rela.- tivo to said members and adapted to move thesecond member vertically, whereby the cam elements will act to move saidsecond member successively laterally in al plurality of planes.

le. ln adie, the combination, a. base plate havingr a stationary diemember secured thereto, said member having an aperture therein, anoperable member supported on springs suspended from the base plate, canielements arranged iespecti,'cly in said aperture and on said movablemembergand a member mo vable relative to said members reca-,iai

and adapted to move the second member vertically, whereby the camelements will act to move said seco-nd member successively laterally ina plurality of planes.

15. ln a die, the combination, a base plate having ay stationary diemember secured thereto, saidI member having an aperture therein, anoperable member supported on 'springs suspended from the base plate, 'amelements arranged respectively in said aperture and on said movable.member, whereby when said operable member is depressed the cam elements`will act to move said member laterally in a plurality of planes.

16. ln die, the combination, a stationary member having` an aperturetherein, u inember operable in .sa-id aperture, cam elements arrangedrespectively in said aperture and on said movable member, whereby whensaid l operable member is dep essed the cam elcments will act to .movesaid member laterally in plurality of planes.

17. ln a die, the combination, a static' iry member having an aperturetherein, a n mber operable in said aperture, cani element-s arranged inthe same plane in said aperture and 'Cain elements arranged in ditlerentplanes on the operable member, whereby when the operable member isdepressed the cam elements will act successively to move said memberlaterally in different planes.

18. ln a die, the combination, stationary member having an aperturetherein, a member operable in said aperture and normally extending;above 'the face of the first member, cam elements arranged respectivelyin said aperture and on said movable member; whereby the cam elementswill act to move said second member successively a plurality of planes,and means to restore the operable member to normal posit-ion.

19. In a die, the combination, stationary member having an aperturetherein, a member operable in said vaperture and normally extendingabove the face of the tiret member, cam elements arranged respectivelyin said aperture and on said movable member; whereby the cam elementsWill act to move said second member successively, and means to restorethe operable member to normal position.

20. ln a die, the combination, a stationary member havinglr means tosupport. an article thereon, a member moving laterally relative to thestationary member, and a member movable relative *to the laterallymovable member, whereby a portion of said article will be removed.

ln testimony whereol allix my signature.

CHARLES lll. lllflllll.

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